Cutting mechanism fob



A. NOVICK. CUTTING MECHANISM FOR ENV ELO'F BLANKS.

I APPUCATIUN FILED NQV. 2 916. 7 1 1310.922. Patented July 22, 1919. u 4 2 NE|S SHEE T i.

' A. NOVICK.

CUTTING MECHANISM FOR ENV.ELOP BLANKS.

APPLICATION FlLED NOV. 28, 191 6.

Patented July 22', 1919.

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flvffovney TE s'rnrns ABRAHAM NOVICK, OF NEW YORK. N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNITED STATES ENVELOPE COMPANY, OF SPRINGFIELD. MASSACHUSETTS, A

CORPORATION OF MA-INE.

Specification of Letters Patent.

CUTTING MECHANISM FOR ENVELOP-BLAN KS.

Patented July 22, 1919.

Application filed November 28, 1916. Serial No. 133,976.

T whom it-may concern:

Be it known that I, ABRAHAM NOVIOK, a citizen of the United States, residing at New York, inthe county of Kings and State of New York, have invented a new and useful Improvement in Cutting Mechanism for Envelop-Blanks, of which the following, together with the accompanying drawings, is

My present invention relates to a cutting mechanism for shaping and severing en described, the features of novelty beingpointed out in the appended claims.

Referring to the accompanying drawings,

Figure 1 is a plan view of so much of a rotary envelop machine as is necessary to illustrate the character of my present invention, the upper or bed rolls cooperating with the cutting rolls having been removed.

Fig. 2 is an enlarged view of the first cutting roll, containing the cutter for cutting one side of the lozenge shaped opening in the center of the web.

Fig. 3 is a transverse sectional view on the plane of the broken line 38, Fig. 2.

F 'ig.4 is an enlarged view of the second cutting roll showing the central cutter in place for completing the lozenge shaped opening in the center of the web, and also showing the recesses for receiving the cutters for forming notches in the edges of the web.

Fig. 5 is an enlarged view of the second cutting roll, showing the cutters in position for cutting two of the four notches formed in the edges of the web, and also showing a recess for receiving the central cutter.

Fig. 6 is a sectional view on the planeof the broken line 6-6, Fig. 5 of one of the cutters for forming notches in the edges of the web. I

Fig. 7 is an enlargedview of the second cutter roll, showing the cutters in position for forming the two remainingnotches of the four notches formed in the edges of the web.

Fig. 8 is an enlarged view of the roll carrying cuttersfor severing the web to form individual envelop blanks.

Fig. 9 is a transverse sectional view on the plane of the broken line 99, Fig. 8.

F ig. 10 is a sectional view of the entire cutting mechanism on the plane of the broken line 1010,-Fig. 1. i

Fig. 11 is a diagrammatic view showing a portion of the continuous web and representing the incisions made therein by full lines, and showing the lines of fold of the e'nvelop blank by broken lines.

F ig. 12 is a detached view of one of the cutting blades for cutting one side of the- .central opening in the web, and

Fig. 13 is a detached view of one of the edge cutters for forming a notch in the edge of the web.

Similar reference characters refer to similar parts in the different figures.

Referring to Fig. 11 of the drawings, 1 denotes a portion of the continuous web from which the envelop blanks are formed by means of the cutting mechanism, said figure showing the adjacent ends of two envelop blanks, each comprising a seal flap 2, back flap 3 and end flaps 4 and 5. The blanks when severed from the continuous web are finally. folded on the broken lines 6. In shaping the blanks to form the flaps of theenvelop, I make four notches. in the edges of the web, namely notches 7 and 8 on one edge of the web, and notches 9 and 10 on the opposite edge of the web. I also form an opening 11 1n the center of the .web between adjacent blanks, said openin being substantially lozenge in shape an having two acute angles 12 and 13 and .two obtuse angles 14 and 15. When the above named incisions have been made in the Web, the web is severed on lines 16 and 17, the line 16 joining the acute angle 12 and the apex of the notch 7, and the line 17 uniting the angle 13 and the apex of the notch 9.

Q i l a I 1,310,922

H Thecutting of the web is accomplished by 'ating with the uppermost,

passing the web between rolls arranged in pairs, one roll of each pair, preferably the lowermost, carrying a cutting knife coiiperorming a bed roll to sever the web. Thearrangement of the cutting and bed rolls isiillustrated'in Fig. 10, in which the rolls 18, 19 and 20 form the cutting rolls, and the rolls 21,22 and constitute the bed rolls coiiperating therewith, said bed rolls havin been removed from Fig. 1 in order to disc ose the position of the cutting knives on-the cutting rolls.

The opening 11 in the center-0 the web is formed by two separate, operations, the v first cutting the lines 24: and lnclosing the obtuse angle 15, and the second operationcutting the lines 26 an d 27 inclosing the obtuse angle 14. 'The cuttersperforming these two operations aremounted upon soparate cutting rolls, in the "present nstance upon rolls 18 and 19 which codpe'rate with the bed rolls 21 and 22 respectively.

I am aware that it has been proposed to cuta similar lozenge shaped opening in the center of the web by means tifa" cutter which forms .the opening at a single operation, the cutter being made in a singlepieoe and having cutting edges for cutting the four sides of the figure. Cutters of this type. are difficult to construct and ,difiicult to sharpen, as the acute angles 12 and 13are extremely pointed. The sides 24' and 26 1 areslightlycurved and are tangential to the line 16, upon which the web is severed upon one side of the opening 11. Likewise, the sides25 and 27 are slightlycurved and are tangential to the line 17, upon which the web is severed upon the other side of the opening 11. The lines 24 and 25 are formed by a single cutter 28 carried; upon the roll 18, shown in Fig. l, and represented on a large scale in Fig. 2. The cutter28 is formed of a single piece of sheet steel, as shown in-sectional view in .Fig. 3, which is swagedby suitable dies into proper form to' correspond with the desired curvature of the lines 24 and 25, Fig. '11, and is beveled upon one edgeto form a cutting edge 29. The cutter is cheaply constructed and easily beveled throughout its length. As it is of uniform thickness, it is' readily tempered to provide an eflicient cutting edge.

.The cutter 28 when completed is attached by screws 30 to the side of a block 31, ha'vr ing its outer curved surface concentric with the axis of the roll upon which it is mounted. The surface of the block 31 to which ting blade 28,rests. The plate 33 rests upon sp'iral springs 34 held 1n recesses 35 formed in a base plate 36,.which rests upon a diametrically slabbed surface 37 of the roll 18.. I

I The base plate 36 is attached .to the roll by screws 3.8;having polygonal heads39 to receive a Wrench. The screws 38 pass through enlarged holes in thebase plate 36 and plate '33 to permit the position of the cutter blade i 28' to be slightly changed, which is accomplished by loosening the screws 38, which ear by their shoulders 40 on the base plate, "and by moving the latter in any direction desired to securethe proper-position of the cutting "blade 28.

- The outward ovement of the plate33 is limited by the heads 41 of screws 42, which are held in the base plate 36:- The cylindrical 'surfacessl3, 4310f the roll 18 upon each side (if the cutter 28icooperate with the sur- 8 5- face of the bed roll 21'to. feed the continuous web forward, and thecutter'blade 28 is radially adjusted by means ofthe screws -42 to bring its'cuttin'g edge into coiitact with I the cylindrical surface of thebedf'roll 21 I causing it to be slightly forged inwardly .a' ainst the pressureof'the springs .34 and e ecting'an mcisionin the web correspond- 'ing to'th'e outline of the cutting edge 29.

between the'v rolls .19 and 22, the roll 19 forming the second cutting roll and the roll 22- ts eoiiperatin bed roll. The cutting roll 19 1s provide at its center with a'cutting blade .44 constructed like the cutting blade 28already described, from a single. piece of .sheet steel swagedinto proper shapeto cut v the web on the lines 26, 27, .Fig. 11, and

thereby completethe formation of the 102- web. .The mounting of the cuttin blade 44 upon the roll 19- is like that a ready described with reference to thecuttingblade 28. The cutting blade 44 is attaclied by screws-4:5 to'the side of a segmental block,

$6, which is mounted upon a plate 4'1 .restmg on sprlngs, indicated by the broken lines 34:, held inirecesses formed in a base plate, not shown, but corresponding to the base plate'36, Fig. 3, said baseplatebeinghld down uponthe slabbed surface of the rolh'lQ by means of screws having polygonal heads I 49. The roll 19, in addition to carrying the" central cuttmg blade 44;, is cut away .or

slabbed upon opposite sides to form recesses for cutters suitablyshaped and positioned to form the notches 7; 8, 9 and 10 in the p v opposite edges of the web. .These edge cut---' te-rs conslstof the blades 50 and 51,. Fig; 5,

of blades 52 and .53, Fig. 7." -'Ih e cuttmg blades 50, 51, 52 and 53 are formed ,from single pieces of sheet steel swaged into proper form, and. beveled on one edge to form a cutting edge, and are attached by screws to segmental blocks 54, 55, 56 and 57.

From the rolls 1 8 and 21 the web passes 95 enge shaped opening 11 inthe center of them 5 I As the method of mounting each of these cutters is the same, a description of cutter 51 will suflice.

The cutter 51, Fig. 5, is shown in sectional view in Fig. 6. -The cutter 1 is at pass through blank holes in the plate 60 .and are screwed into the roll 19. 'From the rolls 19 and 22 the web, having the notches 7, S and 9, Fig. 11, cut in its edges and having the incisionsmade on .the,lines 24-, 25, 26 and 27,- Fig. 11, passes to rolls and 23 containing the severing blades (53 and 64, Fig. 8, which sever the web on the lines 16 and 17-, Fig. 11, said lines connecting the acute angles 12 and 13 with the apices of the notches 7 and 9. The mounting of the severing blade 63 is illustrated in sectional view in Fig. 9, and as the severing. blade (Si is similarly mounted, av description or the mounting of blade 63 will suffice.

The roll. 20, upon which the severing blades are mounted, is slabbed diametrically to receive a blade holding. block 65 resting upon the slabbed surface of the roll 20 to which it is attached by screws 66, said.

screws passing through enlarged holes in the flanged base of the block 65 to permlt the latter to beadjusted slightly up0n the 'roll in order to vary the position of the running in contact with the web, therebyserving as feeding rolls, like the rolls 18,

and 21, to forward the web past the cutting rolls. I also incorporate with the rolls and 71 chip removing devices for removing the severed pieces of paper from v the web, but as these chip removing devices form no part of-m'y present invention, it is unnecessary to-- descrlbe them. 'The I rolls l9 and 20 are provided at their ends "contact with the web. To insure the engagement of the cutting blades carried by the rolls 18 and 20 with the surface of the web, the cutting edges of the bladesare caused to project slightly beyond the pc- 'ri phery of the flanges 72, so they will impinge against the peripheries of the bed rolls 22 and 23 and be pressed down upon their respective supporting springs. The weboi' paper is thereby held taut between the bite of the respective pairs of feeding rolls, while the cutting rolls" run free of the web except as the latter is engaged by the cutting blades. No pressure is, therefore,

imparted to the web during the operation of cutting, except upon lines coincident with the sharpened edges of the cutting blades.

Adetached view of one of the central cutters, 28 is shown in Fig. 12, and in Fig. 13 I have shown a detached view of one of the edge cutters, 51. Figs. 12 and 13, will,

therefore, illustrate the method of forming each of the cutter from a single piece of sheet steel, the 'only difference between the cutters being in their size and shape.

By the above describedmet-hod of formmg the cutting blades and mounting the same upon the cutting rolls, I greatly reduce the cost of constructing the blades, whlch are so readily and cheaply made that new blades may be substituted for old ones at slight cost. The blades are also easily.

sharpened, either in their positions on the rolls or each blade may be removed by withdrawing two screws. By forming the central lozenge shaped opening 11 by two operations, cutting only one side at a time, I am enabledto make the incisions at the two ends of the blade 44 overlap the incis sion made by the ends of the blade 28, thereby enabling the ends of theiopen'mg 11 to be brought to sharp points. The adjustability of the central blades 28 and ll and the severing blades 63 and 6st makes it possible to sever the blankon lines 16 and 17, Fig. 11, so as to accurately join the notches 7- and 9 with the points of the opening 11. The amount of pressure exerted to sufficiently sever the web is measured by the pressure of the springs supporting the cut; ting blades, thereby enabling the operator to provide the requisite pressure a choice of springs. i

I claim:

e j v n 1. In a mechanism of the class ClQSCIIbBCl,

a pair of rolls for forwarding a continuous web, one of the rolls in said pair carrying a knife cooperating with the other roll of tie pair for forming part of an'opening in the center of the WBb, 1 second pair of rolls with one of the rolls of the pair recessed to clear the web, knives carried by said recessed roll and cooperating with the. other roll of said second pair of rolls to complete the center opening in the web and to 'form'notches in the edge of the web. and a third pair of rolls contacting with the web to forward the same, all of said pairs of rolls operating upon the web in the order named.

2. In a mechanism of the class described, a pair of cooperating rolls for forwarding the web, a knife carried by one'of said rolls for severing the web to form part of an opening in the center. of the web, asecond pair of cooperating rolls, a knife carried by one of the rolls of said second-pair for completing the opening in the center of the web,

and also a pair of knives for notching the edges. of the web.

3. In a mechanism of the class described,

a pair of cooperating web forwardly rolls, one of the rolls of said pair carryinga yielding cutter knife for cutting one side of an opening in the center of the web, a second pair of-cooperating rolls, with one roll of said second pair carrying yielding knives for completing the opening in the center of the web and forming notches in the opposite ed es of the web, a third pair of cooperating rol s for forwarding the web, a fourth pair of rolls carrying; knives for severing the web on each side of its center opening, and a fifth pair of cooperating rolls for continuing the forwardmovement .of the web, said pairs of rolls being arranged to operate upon the webin the order named.

4:.In a mechanism of the class described,

means for-forwarding a continuous web, a, pair of cooperating rolls for formmg an.

opening in the edge of the web, one of said palr of rollshaving a slabbed surface, a

j block.

yielding plate supported on said surface, a segmentalblock mounted on said plate,'and a cutting knife attached to the edge ofsaid 5. In a mechanism of the class described, means for forwarding l a continuous web, means for forming an opening in the edge ofthe web, comprising a cooperating pair of rolls, one of said rolls having a slabbed surface provided with recesses, springs held in said recesses, a yielding plat efsupported on said springs, a segmental'block mounted on a portion of said plate, and a cutting knife attached to the edge of the segmental block. I

6. In a mechanism of the class described,

means for forwarding a continuous web,

means for cutting an opening in the center of thew'eb, comprising a pair of cooperating rolls,one of said rolls having a slabbed surface, an adjustable base plate heldon said surface, a yieldin plate outside said base plate, a segmenta block attached to said rolls of said pair having a slabbed surface for supporting a cutting knife, a'plate adustably attached to said surface, a radially yieldable plate spaced from said adjustable plate, springs supp rting said yieldable plate,- ablock attached to said yieldable plate having one of its edges in a substantially, v

radial plane, and a sharpened blade detachably' held on the radial edge of said block with its sharpeheded'ge projecting beyond the periphery of the roll.

-9. In an envelop blank cutting mechanism, means for forwarding a continuous web, cutting means for shaping an envelop blank and a pair of web severing rollsfor separating the shaped blanks from a web,

one of the rolls of said pair having a dia metrically slabbed surfacefor? supporting cutting knives, a block adjustably held on said slabbed surface provided with a longi: tudinal recess, a cutting-knife heldin said recess, a yieldable support'for said knife, and means for limiting the outward movemen of said knife.

10. In a'mechanism of the class described, means for forwarding a continuous web, means for forming an opening in the center of the web, and means for severing the Web between said opening and the edges of the web, comprising a pair of cooperating rolls,

one of said rolls having diametrically slabbed surfaces, a air of blocks adjustably held on said-slabbed surfaces and having longitudinal grooves, a pair of knives held in said grooves, springs for forcing said knives radially outward beyond the peripheries of the roll, and means for limiting the outward movement of the knives.

Dated this 15th day of November, 1916. ABRAHAM NOVICK.

Witnesses:

' MARcY E. DOOLAN, F. B. SCHMIDT; 

